Portable grill



FIG. 1 is a perspective side view of the ornamental appearance of theportable grill;

FIG. 2 is a front view of the portable grill shown in FIG. 1;

FIG. 3 is a side view of the portable grill shown in FIG. 1; and,

FIG. 4 is a top view of the portable grill shown in FIG. 1.

The details shown in broken lines form no part of the claimed design.

We claim the ornamental design for a portable grill, as shown anddescribed.